Non-ferrous Metals
Metal Capillary
Advanced Ceramics
Boron Nitride Ceramic
Pyrolytic Boron Nitride
Silicon Nitride Ceramic
Aluminum Nitride Ceramic
Zirconia Ceramic
Alumina Ceramic
Silicon Carbide Ceramic
Deposition Materials
Semimetal Elements
Functional Materials
Neodymium Magnets
Neodymium Disc Magnets
Neodymium Cylinder Magnets
Neodymium Block Magnets
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Rare Earth Elements
Alumina Substrate
Al2O3 Ceramic Substrate
The purity of alumina substrates used in the electronics industry is about 96%. Alumina ceramic substrates have the advantages of abundant raw material sources, relatively low prices, good wear resistance, excellent electrical insulation performance, good thermal shock resistance and chemical corrosion resistance, high dimensional accuracy, and good bonding with metals. It is a ceramic substrate material with good comprehensive performance.
Edgetech provides alumina ceramics according to demand, and the size can be customized.
Alumina Ceramic Performance
<| Item | Unit | Al2O3 |
| Physical Property | ||
| Color | Ivory | |
| Density | g/cm3 | 3.7-3.9 |
| Purity | % | 95~99.8 |
| Gas Permeability | 0 | |
| Water Absorption | 0% | |
| Mechanical Properties | ||
| Vickers Hardness | GPa | 12.3-17.2 |
| Flexural Strength | MPa | 300-380 |
| Compressive Strength (HV0.5) | MPa | 2000-2350 |
| Elastic modulus | GPa | 270-380 |
| Fracture Toughness | MPam1/2 | 3.5-4 |
| Thermal Properties | ||
| The Max Working Temperature | ℃ | 1650 |
| Thermal Conductivity at room temperature | W/(m·K) | 20-32 |
| Coefficient of Thermal Expansion | 10-6/℃ | 6.5-7.2 |
| Thermal Shock Resistance | △T℃ | 200 |
| Electrical Properties | ||
| Dielectric Strength | KV/mm | 10-15 |
| Dielectric Constant | 9-10 | |
| Dielectric Loss Angle(1MHz) | 0.0002-0.0003 | |
| Volume Resistivity | Ω·cm | >1014 |
*The above information is for comparison only. The exact characteristics will vary depending on the manufacturing method.
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Boron Nitride Tube -
BN Tubes
Typical properties of Alumina ceramics -Good insulation performance -Excellent high-temperature resistance: Stable in a high-temperature environment, not easy to deform, ablate oxidize, etc -High strength and hardness: Can withstand certain mechanical pressure and impact, not easy to break or wear -Excellent chemical stability, can operate stably in a chemically corrosive environment -Good processing performance: Can achieve complex geometric shapes and high-precision dimensional requirements
Applications of Alumina Ceramic Substrate -Power Electronics -Electronic packaging -Hybrid microelectronics -Multi-chip modules, etc. Packing of Alumina ceramics
Alumina substrates use appropriate outer boxes and internal buffer materials; Some components are also vacuum-packed.


